Beset by Scandal, Erdogan Threatens to Ban the Social-Networking Sites

Beset by a sprawling corruption scandal that has implicated dozens of his inner circle and presented the gravest threat to his decadelong rule, Turkey's prime minister is taking aim at two new adversaries he accuses of being tools of his political enemies: YouTube and Facebook.

In a late-night interview on Turkish television, Recep Tayyip Erdogan said he could ban the social-networking sites in Turkey after local elections, due March 30, that are widely seen as a referendum on his personal leadership. The news comes as...